Switch to a 50mm f/1.4 prime lens and the largest available aperture is four stops faster. In low light you'd be limited to a shutter speed of, say, 1/15 sec with a typical zoom (unless you increase your ISO setting). However, an f/1.4 lens will enable a much faster shutter speed of 1/250 sec.
Influenza, commonly known as the flu, is an infectious disease caused by an influenza virus. Symptoms can be mild to severe. The most common symptoms include: a high fever, runny nose, sore throat, muscle pains, headache, coughing, and feeling tired. These symptoms typically begin two days after exposure to the virus and most last less than a week. The cough, however, may last for more than two weeks. In children, there may be nausea and vomiting, but these are not common in adults. Nausea and
Influenza Symptoms. Influenza (also known as the flu) is a contagious respiratory illness caused by flu viruses. It can cause mild to severe illness, and at times can lead to death. The flu is different from a cold. The flu usually comes on suddenly. People who have the flu often feel some or all of these symptoms: 1  Fever* or feeling feverish/chills. 2  Cough. 3  Sore throat.  Runny or stuffy 1  nose. Muscle or body aches. 2  Headaches. Fatigue (tiredness)  Some people may have vomiting and diarrhea, though this is more common in children than adults.